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Finding the Fourth Proportional to 286,891.90, 429,353.70 and 263,272.30

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Solution

The fourth proportional to 286,891.90, 429,353.70 and 263,272.30 is: 394,005.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,891.90 : 429,353.70 = 263,272.30 : x
  2. Step 2: Convert to fraction form
    286,891.90/429,353.70 = 263,272.30/x
  3. Step 3: Cross multiply
    286,891.90x = 429,353.70 × 263,272.30
  4. Step 4: Simplify right side
    286,891.90x = 113,036,936,112.51
  5. Step 5: Solve for x
    x = 113,036,936,112.51/286,891.90
  6. Step 6: Final answer
    x = 394,005.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.